Hand-automatic switching device for electric operating mechanism of isolating switch

Abstract

The utility model provides hand automatic switching device of isolator electric operating mechanism belongs to isolator technical field to solve the problem that the existing outside dust, rainwater etc. can cause certain erosion to the hinge point of the contactor, lead to the problem that the contactor is not enough fluent when opening and closing, including isolation base, switching drive box, isolation drive shaft, insulating support column, isolation contactor, lubrication storage box, switching drive mechanism and automatic lubricating mechanism, switching drive box slidingly connects in the left side of isolation base, isolation drive shaft rotationally connects in the inside of isolation base, insulating support column is fixedly connected respectively in the top of isolation base, isolation contactor is hinged respectively in the top of insulating support column, lubrication storage box is fixedly connected respectively in the rear top end of insulating support column, switching drive mechanism sets up in the inside of switching drive box, automatic lubricating mechanism sets up respectively in the front of lubrication storage box, promotes the operation reliability and the service life of isolator.

Description

Technical Field

[0001] This utility model belongs to the field of disconnecting switch technology, and more specifically, it relates to a manual / automatic switching device for the electric operating mechanism of a disconnecting switch. Background Technology

[0002] A disconnecting switch is a high-voltage electrical device in a power system used to isolate power sources and create a visible disconnection point. Its structure mainly consists of conductive parts (stationary contact, moving contact, conductive arm), insulating parts (post insulators, bushing insulators), and an operating mechanism (manual or electric drive). The conductive parts are supported on a base by insulators, and the moving contact is connected to the operating mechanism to achieve opening and closing actions. Its core function is to reliably isolate electrical equipment from the energized power grid during power outages and maintenance, creating a visible disconnection gap to ensure maintenance safety. It can also work with circuit breakers to perform switching operations and change the system's operating mode. However, because it lacks arc-extinguishing capability, operation under load is strictly prohibited. Disconnecting switches can be operated manually or electrically: manual operation uses a crank or lever to directly drive the transmission mechanism, suitable for small-capacity applications or those without electric drive systems; electric operation is driven by a motor and a reduction gearbox, and can be remotely controlled.

[0003] The existing application number is CN202022597291.0. This utility model discloses a high-voltage disconnecting switch, comprising: a base, a first insulator, a second insulator, an incoming contact, an outgoing contact, a knife switch, a self-locking hook, and a locking plate. One end of the knife switch is rotatably connected to a support. The self-locking hook is located at the free end of the knife switch. The self-locking hook has a hook body and an arc-shaped through groove. The two blades are connected in the middle by a first rotating shaft passing through the arc-shaped through groove. A first separating sleeve is provided on one side of the self-locking hook, and a second separating sleeve is provided on the blade. The first and second separating sleeves are located on a second rotating shaft connecting the two blades. The first rotating shaft is connected to the second rotating shaft by a torsion spring. The end faces of the first and second separating sleeves are provided with matching spiral grooves. When the two ends of the knife switch clamp the incoming and outgoing contacts, the hook body hooks onto the end of the locking plate. When the self-locking hook is rotated, the first and second separating sleeves squeeze each other, causing the knife switch to separate from the incoming and outgoing contacts, and the hook body to separate from the locking plate.

[0004] Based on the above, the knife switch of the existing disconnecting switch is generally hinged to the insulator post. However, since the knife switch is generally directly exposed to the outside world, dust, rain and other external factors will cause certain corrosion to the hinge point of the knife switch over a long period of time, resulting in the knife switch not rotating smoothly when opening and closing, which affects the performance of the disconnecting switch. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a manual / automatic switching device for the electric operating mechanism of a disconnecting switch. This addresses the issue that in existing disconnecting switches, the knife switch is generally hinged to the insulator support. However, since the knife switch is usually directly exposed to the outside environment, long-term exposure to dust, rain, and other external factors can cause corrosion to the hinge point of the knife switch, resulting in insufficient smooth rotation of the knife switch during opening and closing, thus affecting the performance of the disconnecting switch.

[0006] The purpose and effectiveness of this utility model's manual / automatic switching device for the electric operating mechanism of the disconnector switch are achieved through the following specific technical means:

[0007] The manual / automatic switching device for the disconnector switch includes an disconnector base, a switching drive box, a disconnector drive shaft, insulating support columns, disconnector switches, a lubrication storage box, a switching drive mechanism, and an automatic lubrication mechanism. The switching drive box is slidably connected to the left side of the disconnector base. The disconnector drive shaft is rotatably connected to the inner side of the disconnector base. Multiple sets of insulating support columns are fixedly connected to the top of the disconnector base. Three sets of disconnector switches are hinged to the top of the insulating support columns. Three sets of lubrication storage boxes are fixedly connected to the upper rear end of the insulating support columns. The switching drive mechanism is located inside the switching drive box. Three sets of automatic lubrication mechanisms are located in front of the lubrication storage boxes.

[0008] Furthermore, the switching drive mechanism includes: a switching drive rod and a switching insulator; the switching drive rod is provided in three sets, and the three sets of switching drive rods are respectively fixedly connected to the outer periphery of the isolation drive shaft; the switching insulator is provided in three sets, and the three sets of switching insulators are respectively hinged above the switching drive rod, and the upper ends of the three sets of switching insulators are respectively hinged to the isolating switch.

[0009] Furthermore, the switching drive mechanism also includes: an opening and closing drive gear and a switching drive screw; the opening and closing drive gear is coaxially and fixedly connected to the left end of the isolation drive shaft; the switching drive screw is rotatably connected to the left side of the isolation base, and the switching drive screw is threadedly connected to the switching drive box.

[0010] Furthermore, the switching drive mechanism also includes a manual operating handle and an electric operating component; the manual operating handle is rotatably connected to the left rear end of the switching drive box, and a gear structure is coaxially fixedly connected to the right end of the manual operating handle; the electric operating component is a worm gear motor structure, and the electric operating component is fixedly connected to the left front end of the switching drive box, and a gear structure is fixedly connected to the right end of the rotating shaft of the electric operating component.

[0011] Furthermore, the automatic lubrication mechanism includes: a lubrication drive cam, a lubrication pressure cylinder, and a lubrication compression piston; two sets of lubrication drive cams are provided, and the two sets of lubrication drive cams are coaxially fixedly connected to the left and right sides of the isolation gate; two sets of lubrication pressure cylinders are provided, and the two sets of lubrication pressure cylinders are fixedly connected to the front end of the lubrication storage tank. Both sets of lubrication pressure cylinders are connected to the inside of the lubrication storage tank. A one-way valve structure is provided at the connection between the two sets of lubrication pressure cylinders and the lubrication storage tank. An air inlet structure is provided at the upper end of both sets of lubrication pressure cylinders, and a one-way valve structure is provided at the air inlet of both sets of lubrication pressure cylinders; two sets of lubrication compression pistons are provided, and the two sets of lubrication compression pistons are slidably connected to the front end of the inside of the lubrication pressure cylinder. The front end of both sets of lubrication compression pistons is in frictional contact with the lubrication drive cam.

[0012] Furthermore, the automatic lubrication mechanism also includes: a lubrication return spring and a lubrication connecting pipe; two sets of lubrication return springs are provided, and the two sets of lubrication return springs are respectively fixedly connected to the rear end of the lubrication extrusion piston, and the rear end of the two sets of lubrication return springs are respectively fixedly connected to the lubrication pressure cylinder; the rear end of the lubrication connecting pipe is fixedly connected to the inside of the lubrication storage tank, and the front end of the lubrication connecting pipe is set at the hinge point of the isolation gate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention utilizes a switching drive mechanism. Rotating the switching drive screw causes the switching drive box to move forward and backward. The forward movement of the switching drive box engages the gear structure of the manual operating handle with the opening / closing drive gear. Conversely, the backward movement of the switching drive box engages the gear structure of the electric operating component with the opening / closing drive gear. During opening and closing, the opening / closing drive gear rotates, which in turn rotates the isolating drive shaft. This rotation, in turn, rotates the opening / closing drive rod, causing the opening / closing insulator to move up and down. This movement pushes or pulls the isolating switch up or down, thus enabling precise switching between manual and electric operation modes. The orderly linkage of the two operating modes through the mechanical structure ensures a stable switching process, and after switching, it effectively drives the isolating switch to complete the opening and closing action, improving operational flexibility and applicability to meet the operational needs of different scenarios.

[0015] This invention utilizes an automatic lubrication mechanism. The rotation of the isolating switch drives the lubrication drive cam to rotate, which in turn presses backward against the lubrication compression piston. This piston then compresses air from the lubrication pressurizing cylinder into the lubrication storage tank. At this point, the one-way valve at the connection between the lubrication pressurizing cylinder and the lubrication storage tank opens, while the one-way valve at the air inlet of the lubrication pressurizing cylinder closes. Lubricating oil from the storage tank is then injected into the hinge point of the isolating switch through a lubrication connection pipe. Periodic lubrication is achieved through the switch's own movement, continuously reducing friction and wear at the hinge point, lowering the frequency of manual maintenance, improving the operational reliability and service life of the isolating switch, and enhancing its overall performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the lubrication drive cam structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the electric operating component of this utility model.

[0019] Figure 4 This is a schematic diagram of the lubricated extrusion piston structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the lubrication and pressure cylinder structure of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Isolation base; 101. Opening / closing drive rod; 102. Opening / closing insulator; 103. Opening / closing drive gear; 104. Switching drive screw; 105. Manual operating handle; 106. Electric operating component; 2. Switching drive box; 3. Isolation drive shaft; 4. Insulating support column; 5. Isolation switch; 501. Lubrication drive cam; 502. Lubrication pressure cylinder; 503. Lubrication compression piston; 504. Lubrication return spring; 505. Lubrication connecting pipe; 6. Lubrication storage box. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. Example 1

[0024] As attached Figures 1 to 3 As shown:

[0025] This utility model provides a manual / automatic switching device for an isolating switch electric operating mechanism, including an isolating base 1, a switching drive box 2, an isolating drive shaft 3, insulating support columns 4, isolating switches 5, a lubrication storage box 6, and a switching drive mechanism; the switching drive box 2 is slidably connected to the left side of the isolating base 1; the isolating drive shaft 3 is rotatably connected to the inner side of the isolating base 1; multiple sets of insulating support columns 4 are provided, and the multiple sets of insulating support columns 4 are respectively fixedly connected to the upper part of the isolating base 1; three sets of isolating switches 5 are provided, and the three sets of isolating switches 5 are respectively hinged to the upper part of the insulating support columns 4; three sets of lubrication storage boxes 6 are provided, and the three sets of lubrication storage boxes 6 are respectively fixedly connected to the upper rear end of the insulating support columns 4; the switching drive mechanism is located inside the switching drive box 2.

[0026] The switching drive mechanism includes: a switching drive rod 101 and a switching insulator 102; three sets of switching drive rods 101 are provided, and the three sets of switching drive rods 101 are fixedly connected to the outer periphery of the isolation drive shaft 3; three sets of switching insulators 102 are provided, and the three sets of switching insulators 102 are respectively hinged above the switching drive rods 101, and the upper ends of the three sets of switching insulators 102 are respectively hinged to the isolating switch 5.

[0027] The switching drive mechanism also includes: an opening and closing drive gear 103 and a switching drive screw 104; the opening and closing drive gear 103 is coaxially fixedly connected to the left end of the isolation drive shaft 3; the switching drive screw 104 is rotatably connected to the left side of the isolation base 1, and the switching drive screw 104 is threadedly connected to the switching drive box 2.

[0028] The switching drive mechanism also includes a manual operating handle 105 and an electric operating component 106. The manual operating handle 105 is rotatably connected to the left rear end of the switching drive box 2, and a gear structure is coaxially fixedly connected to the right end of the manual operating handle 105. The electric operating component 106 is a worm gear motor structure, and the electric operating component 106 is fixedly connected to the left front end of the switching drive box 2. A gear structure is fixedly connected to the right end of the rotating shaft of the electric operating component 106.

[0029] The specific usage and function of this embodiment are as follows: When it is necessary to switch the opening and closing mode, rotate the switching drive screw 104. The rotation of the switching drive screw 104 drives the switching drive box 2 to move back and forth. The forward movement of the switching drive box 2 drives the gear structure of the manual operation handle 105 to mesh with the opening and closing drive gear 103. The backward movement of the switching drive box 2 drives the gear structure of the electric operating component 106 to mesh with the opening and closing drive gear 103. During opening and closing, the opening and closing drive gear 103 is rotated. The meshing and rotation of the opening and closing drive gear 103 drives the isolation drive shaft 3 to rotate. The rotation of the isolation drive shaft 3 drives the opening and closing drive rod 101 to rotate. The rotation of the opening and closing drive rod 101 drives the opening and closing insulator 102 to move up and down. The up and down movement of the opening and closing insulator 102 pushes or pulls the isolating switch 5 up or down, thereby realizing the opening and closing of the entire isolating switch and realizing the switching of the operation mode. Example 2

[0030] This utility model provides a manual / automatic switching device for the electric operating mechanism of a disconnecting switch, based on Embodiment 1, such as... Figures 1 to 5 As shown, it also includes an automatic lubrication mechanism, of which three sets are provided, and the three sets of automatic lubrication mechanisms are respectively located in front of the lubrication storage box 6.

[0031] The automatic lubrication mechanism includes: a lubrication drive cam 501, a lubrication pressure cylinder 502, and a lubrication compression piston 503. Two sets of lubrication drive cams 501 are provided, coaxially fixedly connected to the left and right sides of the isolating switch 5. Two sets of lubrication pressure cylinders 502 are provided, fixedly connected to the front end of the lubrication storage tank 6. Both sets of lubrication pressure cylinders 502 are connected to the interior of the lubrication storage tank 6. A one-way valve structure is provided at the connection between the two sets of lubrication pressure cylinders 502 and the lubrication storage tank 6. An air inlet structure is provided at the upper end of each set of lubrication pressure cylinders 502, and a one-way valve structure is provided at the air inlet of each set of lubrication pressure cylinders 502. Two sets of lubrication compression pistons 503 are provided, slidably connected to the front end of the interior of the lubrication pressure cylinder 502. The front ends of both sets of lubrication compression pistons 503 are in frictional contact with the lubrication drive cam 501.

[0032] The automatic lubrication mechanism also includes: a lubrication reset spring 504 and a lubrication connecting pipe 505; two sets of lubrication reset springs 504 are provided, and the two sets of lubrication reset springs 504 are respectively fixedly connected to the rear end of the lubrication compression piston 503, and the rear end of the two sets of lubrication reset springs 504 are respectively fixedly connected to the lubrication pressure cylinder 502; the rear end of the lubrication connecting pipe 505 is fixedly connected to the inside of the lubrication storage tank 6, and the front end of the lubrication connecting pipe 505 is set at the hinge point of the isolation gate 5.

[0033] The specific usage and function of this embodiment are as follows: When the isolating switch 5 is opened or closed, the rotation of the isolating switch 5 drives the lubrication drive cam 501 to rotate. The rotation of the lubrication drive cam 501 pushes the lubrication compression piston 503 backward. The lubrication compression piston 503 moves backward and squeezes the air inside the lubrication pressurizing cylinder 502 into the lubrication storage tank 6. At this time, the one-way valve at the connection between the lubrication pressurizing cylinder 502 and the lubrication storage tank 6 opens, and the one-way valve at the air inlet of the lubrication pressurizing cylinder 502 closes. The lubricating oil inside the lubrication storage tank 6 is injected into the hinge point of the isolating switch 5 through the lubrication connecting pipe 505. When the isolating switch 5 is reset, the lubrication drive cam 501 is driven to rotate again. Under the action of the lubrication reset spring 504, the lubrication compression piston 503 is reset. At this time, the one-way valve at the connection between the lubrication pressurizing cylinder 502 and the lubrication storage tank 6 is closed, and the one-way valve at the air inlet of the lubrication pressurizing cylinder 502 is opened, and air is refilled into the lubrication pressurizing cylinder 502.

[0034] The following points should be noted in this article:

[0035] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0036] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0037] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A manual / automatic switching device for the electric operating mechanism of a disconnector switch, characterized in that: The system includes an isolation base (1), a switching drive box (2), an isolation drive shaft (3), an insulating support column (4), an isolation switch (5), a lubrication storage box (6), a switching drive mechanism, and an automatic lubrication mechanism. The switching drive box (2) is slidably connected to the left side of the isolation base (1). The isolation drive shaft (3) is rotatably connected to the inner side of the isolation base (1). Multiple sets of insulating support columns (4) are provided, and the multiple sets of insulating support columns (4) are fixedly connected to the top of the isolation base (1). Three sets of isolation switches (5) are provided, and the three sets of isolation switches (5) are respectively hinged to the top of the insulating support column (4). Three sets of lubrication storage boxes (6) are provided, and the three sets of lubrication storage boxes (6) are respectively fixedly connected to the upper rear end of the insulating support column (4). The switching drive mechanism is located inside the switching drive box (2). Three sets of automatic lubrication mechanisms are provided, and the three sets of automatic lubrication mechanisms are respectively located in front of the lubrication storage box (6).

2. The manual / automatic switching device for the disconnector switch's electric operating mechanism as described in claim 1, characterized in that: The switching drive mechanism includes: a switching drive rod (101) and a switching insulator (102); the switching drive rod (101) is provided in three sets, and the three sets of switching drive rods (101) are respectively fixedly connected to the outer periphery of the isolation drive shaft (3); the switching insulator (102) is provided in three sets, and the three sets of switching insulators (102) are respectively hinged above the switching drive rod (101), and the upper ends of the three sets of switching insulators (102) are respectively hinged to the isolation switch (5).

3. The manual / automatic switching device for the disconnector switch electric operating mechanism as described in claim 2, characterized in that: The switching drive mechanism further includes: an opening and closing drive gear (103) and a switching drive screw (104); the opening and closing drive gear (103) is coaxially fixedly connected to the left end of the isolation drive shaft (3); the switching drive screw (104) is rotatably connected to the left side of the isolation base (1), and the switching drive screw (104) is threadedly connected to the switching drive box (2).

4. The manual / automatic switching device for the disconnector switch electric operating mechanism as described in claim 3, characterized in that: The switching drive mechanism further includes a manual operating handle (105) and an electric operating component (106); the manual operating handle (105) is rotatably connected to the left rear end of the switching drive box (2), and a gear structure is coaxially fixedly connected to the right end of the manual operating handle (105); the electric operating component (106) is a worm gear motor structure, and the electric operating component (106) is fixedly connected to the left front end of the switching drive box (2), and a gear structure is fixedly connected to the right end of the rotating shaft of the electric operating component (106).

5. The manual / automatic switching device for the disconnector switch electric operating mechanism as described in claim 1, characterized in that: The automatic lubrication mechanism includes: a lubrication drive cam (501), a lubrication pressure cylinder (502), and a lubrication compression piston (503); two sets of lubrication drive cams (501) are provided, and the two sets of lubrication drive cams (501) are coaxially fixedly connected to the left and right sides of the isolation switch (5); two sets of lubrication pressure cylinders (502) are provided, and the two sets of lubrication pressure cylinders (502) are fixedly connected to the front end of the lubrication storage tank (6), and both sets of lubrication pressure cylinders (502) are connected to the inside of the lubrication storage tank (6). A one-way valve structure is provided at the connection between the two sets of lubrication pressurizing cylinders (502) and the lubrication storage box (6). An air inlet structure is provided at the upper end of the two sets of lubrication pressurizing cylinders (502). A one-way valve structure is provided at the air inlet of the two sets of lubrication pressurizing cylinders (502). Two sets of lubrication extrusion pistons (503) are provided. The two sets of lubrication extrusion pistons (503) are slidably connected to the front end of the lubrication pressurizing cylinder (502). The front end of the two sets of lubrication extrusion pistons (503) is in frictional contact with the lubrication drive cam (501).

6. The manual / automatic switching device for the disconnector switch electric operating mechanism as described in claim 5, characterized in that: The automatic lubrication mechanism further includes: a lubrication reset spring (504) and a lubrication connecting pipe (505); the lubrication reset spring (504) is provided in two sets, and the two sets of lubrication reset springs (504) are respectively fixedly connected to the rear end of the lubrication compression piston (503), and the rear end of the two sets of lubrication reset springs (504) are respectively fixedly connected to the lubrication pressure cylinder (502); the rear end of the lubrication connecting pipe (505) is fixedly connected to the inside of the lubrication storage box (6), and the front end of the lubrication connecting pipe (505) is set at the hinge point of the isolation gate (5).

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